Nano-BioScience Research Group, DTU-Food,Technical University of Denmark, Søltofts plads, B227, 2800 Kgs. Lyngby, Denmark.
Experimental Dermatology, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
Int J Pharm. 2016 Aug 20;510(1):48-56. doi: 10.1016/j.ijpharm.2016.06.016. Epub 2016 Jun 7.
Chitosan (Ch) polysaccharide was mixed with phospholipids (P) to generate electrospun hybrid nanofibers intended to be used as platforms for transdermal drug delivery. Ch/P nanofibers exibithed average diameters ranging from 248±94nm to 600±201nm, depending on the amount of phospholipids used. Fourier Transformed Infra-Red (FTIR) spectroscopy and Dynamic Light Scattering (DLS) data suggested the occurrence of electrostatic interactions between amine groups of chitosan with the phospholipid counterparts. The nanofibers were shown to be stable for at least 7days in Phosphate Buffer Saline (PBS) solution. Cytotoxicity studies (WST-1 and LDH assays) demonstrated that the hybrid nanofibers have suitable biocompatibility. Fluorescence microscopy, also suggested that L929 cells seeded on top of the CH/P hybrid have similar metabolic activity comparatively to the cells seeded on tissue culture plate (control). The release of curcumin, diclofenac and vitamin B12, as model drugs, from Ch/P hybrid nanofibers was investigated, demonstrating their potential utilization as a transdermal drug delivery system.
壳聚糖(Ch)多糖与磷脂(P)混合,生成用于透皮给药的电纺混合纳米纤维。Ch/P 纳米纤维的平均直径范围为 248±94nm 至 600±201nm,具体取决于所用磷脂的量。傅里叶变换红外(FTIR)光谱和动态光散射(DLS)数据表明壳聚糖的胺基与磷脂对应物之间存在静电相互作用。纳米纤维在磷酸盐缓冲盐水(PBS)溶液中至少稳定 7 天。细胞毒性研究(WST-1 和 LDH 测定)表明,混合纳米纤维具有合适的生物相容性。荧光显微镜还表明,与接种在细胞培养板上的细胞(对照)相比,种在 CH/P 混合纳米纤维上的 L929 细胞具有相似的代谢活性。还研究了姜黄素、双氯芬酸和维生素 B12 作为模型药物从 Ch/P 混合纳米纤维中的释放,表明它们具有作为透皮药物递送系统的潜在用途。